Schedules count for Courses list

app/controllers/courses_controller.rb

@@ -15,7 +15,7 @@ def index
   def show
     @examinations = Examination.where(course_id: params[:id]).order(:title)
     @academic_groups = @course.academic_groups.order(:title)
-    @class_schedules_count = @course.class_schedules.count
+    @class_schedules_count = @course.class_schedules_count
 
     respond_with(@course)
   end

app/models/class_schedule.rb

@@ -2,7 +2,7 @@ class ClassSchedule < ApplicationRecord
   include ClassScheduleCustomValidations
 
   belongs_to :classroom
-  belongs_to :course
+  belongs_to :course, counter_cache: true
   belongs_to :teacher_profile
 
   has_many :academic_group_schedules, dependent: :destroy

app/views/courses/index.html.haml

@@ -16,6 +16,7 @@
             %th.text-top= t('.course_title')
             %th.text-top= t('.course_variant')
             %th.text-top= t('.course_examination_results_count')
+            %th.text-top= t('.course_class_schedules_count')
 
             - if @courses.any? { |c| policy(c).tap { |p| break p.edit? || p.destroy? } }
               %th.text-top.text-right= t('.actions')
@@ -27,11 +28,9 @@
                 = link_to_if policy(course).show?, course.title, course_path(course) do
                   = course.title
 
-              %td
-                = course.variant
-
-              %td
-                = course.examination_results_count
+              %td= course.variant
+              %td= course.examination_results_count
+              %td= course.class_schedules_count
 
               - if policy(course).tap { |p| break p.edit? || p.destroy? }
                 %td.col-xs-2.col-sm-3.col-md-2.text-right

config/locales/general.ru.yml

@@ -119,6 +119,7 @@ ru:
       course_variant: 'Вариант'
       title:        'Предметы'
       course_examination_results_count: 'Количество сданных зачетных работ'
+      course_class_schedules_count: 'Создано расписаний'
     show:
       academic_group_title: 'Название'
       actions:              'Действия'

config/locales/general.uk.yml

@@ -119,6 +119,7 @@ uk:
       course_variant: 'Варіант'
       title:        'Предмети'
       course_examination_results_count: 'Кількість зданих залікових робіт'
+      course_class_schedules_count: 'Створено розкладів'
     show:
       academic_group_title: 'Назва'
       actions:              'Дії'

db/migrate/20230306054610_add_schedules_count_to_course.rb

@@ -0,0 +1,5 @@
+class AddSchedulesCountToCourse < ActiveRecord::Migration[5.0]
+  def change
+    add_column :courses, :class_schedules_count, :integer, default: 0
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20230305211926) do
+ActiveRecord::Schema.define(version: 20230306054610) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -135,6 +135,7 @@
     t.string   "description",               limit: 255
     t.string   "variant"
     t.integer  "examination_results_count",             default: 0
+    t.integer  "class_schedules_count",                 default: 0
   end
 
   create_table "examination_results", force: :cascade do |t|

db/structure.sql

@@ -513,7 +513,8 @@ CREATE TABLE public.courses (
     title character varying(255),
     description character varying(255),
     variant character varying,
-    examination_results_count integer DEFAULT 0
+    examination_results_count integer DEFAULT 0,
+    class_schedules_count integer DEFAULT 0
 );
 
 
@@ -2010,6 +2011,7 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20230225063808'),
 ('20230226200547'),
 ('20230226201309'),
-('20230305211926');
+('20230305211926'),
+('20230306054610');